/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.commons.sync.pipe;

import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils;

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;

public class PipeMessage {
    private final String message;
    private final PipeMessageType type;

    public PipeMessage(PipeMessageType type, String message) {
        this.type = type;
        this.message = message;
    }

    public String getMessage() {
        return message;
    }

    public PipeMessageType getType() {
        return type;
    }

    public ByteBuffer serializeToByteBuffer() throws IOException {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        DataOutputStream dataOutputStream = new DataOutputStream(byteArrayOutputStream);
        serialize(dataOutputStream);
        return ByteBuffer.wrap(byteArrayOutputStream.toByteArray());
    }

    public void serialize(DataOutputStream dataOutputStream) throws IOException {
        ReadWriteIOUtils.write(message, dataOutputStream);
        ReadWriteIOUtils.write(type.getType(), dataOutputStream);
    }

    public static PipeMessage deserialize(ByteBuffer buffer) {
        String message = ReadWriteIOUtils.readString(buffer);
        PipeMessageType type = PipeMessageType.getPipeStatus(ReadWriteIOUtils.readByte(buffer));
        return new PipeMessage(type, message);
    }

    @Override
    public String toString() {
        return "PipeMessage{" + "message='" + message + '\'' + ", type=" + type + '}';
    }

    public enum PipeMessageType {
        NORMAL((byte) 1),
        WARN((byte) 2),
        ERROR((byte) 3);

        private byte type;

        PipeMessageType(byte type) {
            this.type = type;
        }

        public byte getType() {
            return type;
        }

        public static PipeMessageType getPipeStatus(byte type) {
            switch (type) {
                case 1:
                    return PipeMessageType.NORMAL;
                case 2:
                    return PipeMessageType.WARN;
                case 3:
                    return PipeMessageType.ERROR;
                default:
                    throw new IllegalArgumentException("Invalid input: " + type);
            }
        }
    }
}
